Data processing method in conference TV-set multipoint controlling apparatus

A multi-point control and data processing technology, applied in the field of data processing, can solve the problems of packet delay, jitter, disorder, etc., and achieve the effect of improving the ability

Inactive Publication Date: 2006-08-16
ZTE CORP
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to provide a method for processing media data in a video conferencing MCU, which can solve the image and sound quality problems caused by the delay, disorder, and jitter of data packets caused by packet switching characteristics

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Embodiment Construction

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] The invention discloses a data processing method in multi-point control equipment of video conference, which is realized by mixed programming of C language and assembly language. The processing process includes at least: media sorting, synchronous output and flow control; among them, media sorting is used to eliminate the impact of disorder and network jitter on video and audio quality; bandwidth for output.

[0031] see figure 1 , in the process of media sorting, first judge the validity of the received RTP packet, if the sequence number of the packet is less than the minimum sequence number of the current sorting, it is considered that the delay of the packet exceeds the tolerance range of the system, and it is considered as a packet loss and will not be processed. Then, sort in the current sorting linked list according to ...

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Abstract

A method for data process in the multi-point control equipment for conference television, includes media ordering , synchrono output and flow control; of which, the media ordering is used for eliminate desequencing and network jitter; the synchrono output and flow control is used in output the data with certain bandwidth. Communication processor is used in completing dispatch and reception of IP package, communication processor and digital signal processor are used in processing RTP data, completing media ordering and synchrono output and flow control; this method solves the problem that must be solved for intercommunication between H323 and H320 in MCU, guarantee to implement the gateway in MCU, digital multi picture, rate adaption and sound mixing function, promote ability of QoS and adapting ability for complex network condition.

Description

Technical field: [0001] The invention relates to a real-time data transmission technology based on packet switching in data communication, in particular to a data processing technology for intercommunication between H323 and H320 in video conference multipoint control equipment. Background technique: [0002] In the MCU (Multi-point Control Unit, Multi-point Control Unit) of the existing video conference system, most of them are pure H323 protocol and pure H320 protocol. Pure 320 MCU is based on circuit switching; since circuit switching is a reliable connection, there is no data delay, disorder or jitter, so there is no need to consider sorting and caching; pure H323 conference TV MCU does not involve slave packets Switching to circuit switching, so when processing the RTP (Real-Time Protocol, Real-Time Protocol) packets transmitted through the IP (Internet Protocol, Internet Protocol) network, caching and sorting them, the burst of data transmission is not considered. Due...

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Application Information

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IPC IPC(8): H04N7/15H04L29/06H04L12/56H04L49/9023
Inventor翁键曹珈
OwnerZTE CORP